Ship&#39;s ventilator-cover



. V. BRDWN.

SHIPS VENTLATR COVER.

APPLICATION FILED JAN. i9,

may 24,1921.

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UNITED STATES PATENT OFFICE.

THEOPHILUS M. BROWN, OF SEATTLE, WASHENGTON, ASSIGNOR OF ONE-THIRD TO HOWELL P. PARKER AND ONE-THERE) TO ROBERT QT. I-IOW'LAND, BOTH 0F SEATTLE,

VJASHNGTON.

SHIPS VENTILATOR-COVER.

navales.

Application filed January 19, 1920.

To all ifi/wm t may Couric/mv:

Be it known that l, Timon-rinus MA BnowN, a citizen ot the United States, residing at Seattle, in the county ot Kingand State of l/Vashington, have invented certain new and useful improvements in vShips7 Ventilator-Covers, ot which the following; is a speciiication.

My invention relates to improvements in removable covers or closures for the ventilatorshatts or pipes oi? ships, and the objectot my improvement is to provide simple, inexpensive and easily manipulated means tor closing the air passageway through the ventilator-pipe ot a ship to preclude the en-` trance ot moisture in any form, or to serve as a means ot preventing a draft in case ot lire.

further object ot my invention is to provide novel devices for securing the cover member in its closed position, and to provide packing` means to effectively seal the passageway through' the ventilator pipe when the cover member is applied A still further object is to design a cover or closure means that may be applied to ventilator pipes ot the usual standard type ot construction without substantial alteration of such ventilator pipes or the cowls that tit thereover.

The invention consists in the novel construction, adaptation and combination oit' parts, as will be more clearly hereinafter described and claimed.

In the accompanying drawings, Figure l is a view in vertical mid-section ot the upper end of a ships ventilator that is equipped with a closure device constructed in accordance with my invention, the ventilator being provided with a cowl ot the usual form; Fig. 2 is a view in cross-section, substantially on a broken line 2-2 of Fig. l, showing the closure device in plan, Fig. 3 is a view in cross-section substantially on broken line 3--3 ot Fig. l. Fig. l is an enlarged view partly in cross-section and partly in elevation, illustrating certain details ot the invention; and Fig. 5 is a detached view in perspective showing a detail ot the invention.

Ships of large size are usually provided with ventilator shaits or pipes that project above the decks of the ship and that are provided with cowls having large hoodlike up- Speccation of Letters Patent.

Patented May 24C, 1921.

.Serial No. 352,611.

per ends open on one side, the said cowls being arranged to lit over the upper ends ci the ventilator pipes and to be rotatable thereon so that the cowl may be turned with the openingl in any desired direction. The lower ends of the ventilator pipes communicate with compartments ot the ship that are to be ventilated, as with the cargo space in the hold.

in wet and stormy weather, moisture will Otten enter through the ventilators and damage the cai-gro. ln case ot tire, the ventilator pipes aiiord a draft means and malte it more difhcult to extinguish such fire. This invention comprises a quickly and easily manipulated cover member for eliect-ively closing the ventilator pipes to prevent the entrance of moisture in stormy weather and to prevent a draft in case of a lire.

lteiierring to the drawings, throughout which like reference numerals designate like parts, the numeral 6 designates the upper end ot a ships ventilator'shait or pipe, which ventilatormay extend downwardly into any compartment of the ship to serve as a means of Ventilating the compartment.

Numeral 7 designates a cowl of the usual form that is adapte-d to lit over the outside of the ventilator G and whose lower end rests upon a band 8 that encircles the ventilater 6 and is rigidly secured thereto. The upper end oi' lthe cowl 7 is enlarged and flared in well-known manner to form a hood that is o ien on one side, as at l0, the open side being; adapted to be turned to tace in any desired direction by rotating the cowl on the ventilator shaft 6.

rThe ventilator shaft G is usually oi' comparatively large diameter so that it is practically impossible to close such shaft without providing special means tor this purpose or without removing the relatively large and heavy cowl 7.

My invention contemplates the provision ot a removable metal cover memberl by which the passageway through the ventilator shatt 6 may be quickly and easily closed. My cover member comprises a cylindrical plate or dislr ll that is adapted to .tit within the cowl 7 and rest upon the top edge of the ventilator shaft 6. The plate 7 is provided on its Vlower surface and around the outer edgel thereof with a. packing ring; l2 that is securely held in place by an mnularl metal ring member 13 that is adapted to lit snugly within the upper' end of the ventilator shaft G and that serves to hold the cover plate 11 in a central position, the packing washer 12 being secured to the cover plate by inserting the inner edge between the bottom surface of the plate 11 and the ring 13 and securing the ring 13% to the plate 11 by screws 15, as more clearly shown in Fig. 4.

T he plate 11 is rigidly and tightlv secured to the ventilator shaft by bolts 16 that are provided on their lower ends with adjustable mts 17 and are adapted to engage within slots 18 in angle brackets 20 that are secured by rivets 21 to the sides of thc ventilator shaft 6.

The bolts 16pass upwardly through holes 19 in the cover plate11 and are connected at their upper ends by eccentric pivot pins 22 with cams 23, the said cams 23 being providedL with integral'lever arms Q4.

A washer 25 of packing material is placed on each bolt 16 adjacent the cover plate 11, and another washer 26 of metal is disposed on the top of the packing washer 25 and is ,arranged to be engaged by the cams 23. rlhe bottom end of the bolt 16 is preferably provided with a cross pin 27 to prevent the nut 17 from being entirely removed.

1n practice it has been found satisfactory `to secure the cover plate 11 to the ventilator pipe 6 at three equidistantly spaced points around the periphery thereof, but it will be understood that the same may be secured at any desired number of points, the securing means at the several points being substantially duplicate.

' The cover plate 11 is preferably provided with a handle or handheld 28 of the form shown in Fig. 2 and the cowl 7 is provided on its inner surface with a bracket 30 as shown in Fig. 1, so that when the coverplate 11 is removed from the ventilator shaft t3, the handle 28 may be hooked over the bracket 30 and the cover plate permittedto hang within the cowl 7 in an out-of-the-way position, substantially as shown in dotted lines in Fig. 1. i

' llllhen the cover plate is to be used, it is removed from the bracket 30 and placed on the top end of the ventilator shaft 6 in such a manner that the ring. 13 lits inside of the ventilator shaft and the packing ring 12 rests upon the top edge of such ventilator shaft. The levers 24 are lifted into substantially upright positions, as shown in Fig. 4, thus permitting the bolts 16 to move downwardly so that the nuts 17 will pass under the outwardly projecting` flanges of the angle brackets 20 when the cover plate is turned, in such a manner as to cause the bolt 16 to enter the notches 18.

After the cover plate has been turned to cause the bolts 16 to enter the notches 18, the

lever arms 24C may be moved downwardly into the position shown in Figs. 1 and '2, thereby causing the cams 23 by engagement with the washers 26 to lift the bolts 16 and cause such bolts to draw the cover plate 11 down tightly onto the top of the ventilator `shaft 6, thereby securing the plate 11 to the ventilator shaft and compressing the packing washers 12 and 25 in such manner as to preclude the entrance of moisture.

After the levers 2e are turned downwardly into the position shown in Figs. 1 and 2, they may be secured in this position by .means of a cable 31 which is passed through perforations 32 in the ends of such levers, and which passes under the handle 28 and may be tied in substantially the manner shown in Fig. 2.

Then the cover plate is to be removed, the levers 2l are lifted into a substantially upright position, thereby relieving the tension on bolts 16 so that the cover plate 11 may be turned to move the bolts 16 out of the notches 18, thereby permitting the cover plate to be lifted oft'.

t will be understood that changes in the form, dimensions and arrangements of the various parts of this device may be made within the scope of the following claims.

1. The combination with a ships ventilator pipe, of a cover arranged to rest upon the top end of said ventilator pipe, brackets within said ventilator pipe, bolts projecting downwardly through said cover and provided with means for engaging said brackets, and cam levers for exerting a tension on said bolts,

2. The combination with a ships ventilator pipe, of a cover arranged to rest upony the top end of said` ventilator pipe, brackets secured to the inside of said ventilator pipe and provided with notches in the side edges thereof, bolts projecting downwardly through said cover and arranged to be moved into the notches vin said brackets by rotation of said cover, and cam levers connected with the upper'ends of said bolts for exerting a tension on said bolts.

3. TheV combination with a ships ventila tor pipe, of a cover arranged to rest upon the top end of said ventilator pipe, brackets secured to the inside of said ventilator pipe, bolts projecting downwardly through said cover, adjustable means on the bottom ends of said bolts arranged to engage with said brackets, and cam levers pivotally connected with the upper ends of said bolts for exerting a tension on said bolts.

4e. The combination with a ships ventilator pipe, of a circular cover arranged to rest upon the top end of said ventilator pipe, a packing ring on the lower side of said cover andarranged to be interposed between said cover and the top end of said ventilator pipe, a metal ring of smaller diameter than said cover secured to the bottom side thereof and arranged to fit snugly within said ventilator pipe, said packing ring being securely held between said metal ring and said cover, brackets secured to the inside of said ventilator pipe, bolts projecting .downwardly through said cover, means on the lower ends ot said bolts for releasably engaging said brackets, and means connected with the upper ends of said bolts for moving said bolts lengthwise through said cover member to secure said cover member to said pipe.

5. rlie combination ywith a ships ventilator pipe, or' a cover for the top end of said pipe, brackets secured to the inside of said pipe, bolts projecting downwardly through said cover and having means on their bottom ends for engaging with said brackets, cam levers pivotally connected with the top ends of said bolts and adapted to be moved from a substantially upright released position into a substantially horizontal locked position, said cam levers being arranged to extend radially toward the center of said cover when in a locked position and having perforations provided in their inner ends, and a cable arranged to be passed through said perforations and tied to secure said cam levers in locked position.

Seattle, lVash., January l0, 1920.

THEOPHILUS M. BROVN. 

